A mesmerizing blue light is illuminating Hong Kong’s waters, but the lights aren’t just beautiful. Marine biologists are saying they’re potentially toxic. This stunning light is a strong indicator a harmful algal bloom is present. Noctiluca scintillans, also known as Sea Sparkle, is known to create this type of bloom. Noctiluca is a single-celled organism and a wonder in itself, as it functions as both a plant and animal. The organism can act and look like algae, even though, it...